You are correct.
HL's with an "agenda" be it pro or con about a stock, are eventually stripped of their role.
I have seen several even be banned by admin, after enough evidence to support it justifies that action.
If any poster feels a deletion or flagged for a violation then deleted is unjustified, simply report it to this email address:
contactagora@agoracom.com
HL's are bound to the 6 simple to follow rules like anyone else, and special treatment should not be tolerated by anyone.
The system is fine here and we all need to keep it that way.